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578 1024x600 roof, architecture, structure
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1698 1024x600 roof, architecture, beijing national stadium
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1670 1024x600 roof, ceiling, architecture
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1929 1024x600 roof, architecture, sky
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1755 1024x600 roof, glass, lines
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2329 1024x600 roof, circle, relief
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1911 1024x600 roof, lines, intersections
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4453 1024x600 roof, bamboo, rope
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2327 1024x600 roof, pipes, ceiling
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1512 1024x600 roof, arch, pattern
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2113 1024x600 roof, structure, sky
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2558 1024x600 roof, building, architecture
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2721 1024x600 roof, architecture, sky
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1832 1024x600 roof, architecture, relief
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2136 1024x600 roof, building, relief